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Ryokan with an open-air bath in the room in Wakayama

Stays in Wakayama where you can soak in an onsen bath on your own room’s terrace.

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Stays in Wakayama

7 stays
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  1. Ryujin-onsen Shimogoten

    Ryujin-onsen Shimogoten

    Tanabe, Wakayama

    • Rooms with private open-air bath

    Bicarbonate Spring · Alkaline (pH 7.5+)

    Sources & details
    • Analysis report on file
    • Private bath checked Oct 2026

    Spring type: Sodium Bicarbonate Hot Spring / Metasilicic acid 65.2 mg/kg

    Source: in-room bath (shimogoten.com) · Checked May 31, 2026

  2. Allesud Valle Shirahama

    Allesud Valle Shirahama

    Shirahama, Wakayama

    • Rooms with private open-air bath

    No onsen analysis report on file yet

    Sources & details
    • Private bath checked Oct 2026

    Source: in-room bath (travel.rakuten.co.jp)

  3. Infinito Hotel & Spa Nanki Shirahama

    Infinito Hotel & Spa Nanki Shirahama

    Shirahama, Wakayama

    • Rooms with private open-air bath

    No onsen analysis report on file yet

    Sources & details
    • Private bath checked Oct 2026

    Source: in-room bath (travel.rakuten.co.jp)

  4. Kisyu Shirahama Onsen Musashi

    Kisyu Shirahama Onsen Musashi

    Shirahama, Wakayama

    • Rooms with private open-air bath
    • Reservable private bath

    No onsen analysis report on file yet

    Sources & details
  5. Yukai Resort Nanki Katsuura Onsen Koshi no Yu

    Yukai Resort Nanki Katsuura Onsen Koshi no Yu

    Wakayama

    • Rooms with private open-air bath
    • Reservable private bath

    No onsen analysis report on file yet

    PRIncludes affiliate links
    View rates on Agoda
    Also onExpedia
    Sources & details

    Source: in-room bath (youtube.com) · private bath (rurubu.travel) · Checked May 30, 2026

  6. Shirahama Onsen Hotel Sanrakuso

    Shirahama Onsen Hotel Sanrakuso

    Shirahama, Wakayama

    • Rooms with private open-air bath

    No onsen analysis report on file yet

    Sources & details
    • Private bath checked Oct 2026

    Source: in-room bath (travel.rakuten.co.jp)

  7. Shirahama Onsen Hotel Tenzangaku Umiyutei

    Shirahama Onsen Hotel Tenzangaku Umiyutei

    Shirahama, Wakayama

    • Rooms with private open-air bath

    No onsen analysis report on file yet

    Sources & details
    • Private bath checked Oct 2026

    Source: in-room bath (travel.rakuten.co.jp)

Sorted using onsen analysis reports and what each property states on its own or booking-site page.

About in-room open-air baths
Rooms with a private open-air bath
The bath is part of your guest room (kyakushitsu rotenburo). Usually only some room types have one, so check the room type when you book.

The water in a room’s bath may come from a different source, or be heated or recirculated differently, than the shared baths. Even for stays with an analysis report, ask the property how the in-room bath is supplied.

How we know

A stay is listed only when its official website or booking-site page says some rooms have a private open-air bath. Usually only certain room types have one, so check the room type when you book.

  • Private bath and tattoo information comes from each property's official website or other published information. Every item links to its source and shows the date we last checked it. Items we could not source are left out.
  • Spring type, pH and how the water is used come from the onsen analysis report that Japanese law requires each facility to post, and from the facility's water-usage notice. They are shown only for stays whose report we have on file.
  • Details can change after we check them. Please confirm with the property before you book, especially tattoo rules and private bath fees.
  • Booking buttons are affiliate links. They do not affect which stays are listed.